This paper is the first of several that have been proposed with an aim of contributing to the body of knowledge related to the subject of ceramic wares, which have been recovered from the Lower Columbia River region in Southwest Washington State and are commonly referred to as Shoto Clay or Lake River Ceramics. Previous research and reporting on this subject has been limited due to a lack of professionally lead excavations and the limited availability of wares from which scientific study might be made.
The author, over a span of several years, has attempted to locate privately held collections that contain these wares with a goal of photographing and obtaining basic data. Through various sources and informants, several local area collections were identified. These collections ranged in size but most were limited to only few examples. When permission could be obtained, photographs, measurements and associated information was collected.
These efforts have resulted in identifying several hundred specimens, many of which had not been previously documented. In some instances, previously unknown ware types were additionally identified. This and future papers will serve as a presentation of the author's findings.